I was wondering for 5d, if I calculated the probability inside 0.5min either side of the mean rather than outside, would I be able to pick up a mark? I was only really lacking the "1 - ans" part if I had tackled the real question this way I believe

I was wondering for 5d, if I calculated the probability inside 0.5min either side of the mean rather than outside, would I be able to pick up a mark? I was only really lacking the "1 - ans" part if I had tackled the real question this way I believe

Yeah think you'll get at least one for that. Maybe two if you're lucky but one is the safe bet.